11978627 has 4 divisors (see below), whose sum is σ = 12102216. Its totient is φ = 11855040.

The previous prime is 11978621. The next prime is 11978641. The reversal of 11978627 is 72687911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72687911 = 1867 ⋅38933.

It is a cyclic number.

It is not a de Polignac number, because 11978627 - 2⁴ = 11978611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11978621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61649 + ... + 61842.

It is an arithmetic number, because the mean of its divisors is an integer number (3025554).

Almost surely, 2^11978627 is an apocalyptic number.

11978627 is a deficient number, since it is larger than the sum of its proper divisors (123589).

11978627 is an equidigital number, since it uses as much as digits as its factorization.

11978627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123588.

The product of its digits is 42336, while the sum is 41.

The square root of 11978627 is about 3461.0153134593. The cubic root of 11978627 is about 228.8068456373.

The spelling of 11978627 in words is "eleven million, nine hundred seventy-eight thousand, six hundred twenty-seven".